Module org.apache.jena.core
Package org.apache.jena.assembler

Class Mode

java.lang.Object
org.apache.jena.assembler.Mode
public class Mode extends Object
A Mode object controls whether persistent objects can be created or reused by an assembler. Their methods are expected to be called when an assembler is about to create a new object (because no object with the given name exists) or reuse an existing one (because one does).

The default behaviour of the methods is dictated by booleans bound into the mode object. Subclasses of mode may exploit the ability to inspect the name of the object or its other RDF properties.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final Mode
    ANY
    Mode that permits existing objects to be reused and new objects to be created.
    static final Mode
    CREATE
    Mode that demands a new object be created and no existing object should exist.
    static final Mode
    DEFAULT
    Default mode; existing objects are reused, new objects are not created
    static final Mode
    REUSE
    Mode that requires that objects should already exist; new objects cannot be created.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Mode(boolean mayCreate, boolean mayReuse)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    permitCreateNew(Resource root, String name)
    Answer true if the object root with the given name can be created if it does not already exist.
    boolean
    permitUseExisting(Resource root, String name)
    Answer true if the existing object root with the given name can be reused.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • CREATE

      public static final Mode CREATE
      Mode that demands a new object be created and no existing object should exist.

    • DEFAULT

      public static final Mode DEFAULT
      Default mode; existing objects are reused, new objects are not created

    • REUSE

      public static final Mode REUSE
      Mode that requires that objects should already exist; new objects cannot be created.

    • ANY

      public static final Mode ANY
      Mode that permits existing objects to be reused and new objects to be created.

  • Constructor Details

    • Mode

      public Mode(boolean mayCreate, boolean mayReuse)

  • Method Details

    • permitCreateNew

      public boolean permitCreateNew(Resource root, String name)
      Answer true if the object root with the given name can be created if it does not already exist.

    • permitUseExisting

      public boolean permitUseExisting(Resource root, String name)
      Answer true if the existing object root with the given name can be reused.